Skip to content
Navigation Menu
{{ message }}
forked from cirosantilli/linux-kernel-module-cheat
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathrun
More file actions
executable file
·659 lines (653 loc) · 29.9 KB
/
Copy pathrun
File metadata and controls
executable file
·659 lines (653 loc) · 29.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
#!/usr/bin/env python3
import os
import re
import shutil
import subprocess
import sys
import time
import common
from shell_helpers import LF
class Main(common.LkmcCliFunction):
def __init__(self):
super().__init__(
description='''\
Run some content on an emulator.
'''
)
self.add_argument(
'--background', default=False,
help='''\
Send QEMU output to a file instead of the terminal so it does not require a
terminal attached to run on the background. Interactive input cannot be given.
TODO: use a port instead. If only there was a way to redirect a serial to multiple
places, both to a port and a file? We use the file currently to be able to have
any output at all.
https://superuser.com/questions/1373226/how-to-redirect-qemu-serial-output-to-both-a-file-and-the-terminal-or-a-port
'''
)
self.add_argument(
'-c', '--cpus', default=1, type=int,
help='Number of guest CPUs to emulate. Default: %(default)s'
)
self.add_argument(
'--ctrl-c-host', default=False,
help='''\
Ctrl +C kills the QEMU simulator instead of being passed to the guest.
'''
)
self.add_argument(
'-D', '--debug-vm', default=False,
help='Run GDB on the emulator itself.'
)
self.add_argument(
'--debug-vm-args', default='',
help='Pass arguments to GDB. Implies --debug-vm.'
)
self.add_argument(
'--dtb',
help='''\
Use the specified DTB file. If not given, let the emulator generate a DTB for us,
which is what you usually want.
'''
)
self.add_argument(
'-E', '--eval',
help='''\
Replace the normal init with a minimal init that just evals the given string.
See: https://github.com/cirosantilli/linux-kernel-module-cheat#replace-init
'''
)
self.add_argument(
'--kernel-cli',
help='''\
Pass an extra Linux kernel command line options, and place them before
the dash separator `-`. Only options that come before the `-`, i.e.
"standard" options, should be passed with this option.
Example: `./run --arch arm --kernel-cli 'init=/poweroff.out'`
'''
)
self.add_argument(
'-F', '--eval-after',
help='''\
Pass a base64 encoded command line parameter that gets evalled at the end of
the normal init.
See: https://github.com/cirosantilli/linux-kernel-module-cheat#init-busybox
'''
)
self.add_argument(
'--kernel-cli-after-dash',
help='''\
Pass an extra Linux kernel command line options, add a dash `-`
separator, and place the options after the dash. Intended for custom
options understood by our `init` scripts, most of which are prefixed
by `lkmc_`.
Example: `./run --kernel-cli-after-dash 'lkmc_eval="wget google.com" lkmc_lala=y'`
'''
)
self.add_argument(
'-G', '--gem5-exe-args', default='',
help='''\
Pass extra options to the gem5 executable.
Do not confuse with the arguments passed to config scripts,
like `fs.py`. Example:
./run --emulator gem5 --gem5-exe-args '--debug-flags=Exec --debug' -- --cpu-type=HPI --caches
will run:
gem.op5 --debug-flags=Exec fs.py --cpu-type=HPI --caches
'''
)
self.add_argument(
'--gem5-script',
default='fs',
choices=['fs', 'biglittle'],
help='Which gem5 script to use'
)
self.add_argument(
'--gem5-readfile', default='',
help='Set the contents of m5 readfile to this string.'
)
self.add_argument(
'-K', '--kvm', default=False,
help='Use KVM. Only works if guest arch == host arch'
)
self.add_argument(
'--kgdb', default=False,
)
self.add_argument(
'--kdb', default=False,
)
self.add_argument(
'--gem5-restore', type=int,
help='''\
Restore the nth most recently taken gem5 checkpoint according to directory
timestamps.
'''
)
self.add_argument(
'-m', '--memory', default='256M',
help='''\
Set the memory size of the guest. E.g.: `-m 512M`. We try to keep the default
at the minimal ammount amount that boots all archs. Anything lower could lead
some arch to fail to boot.
Default: %(default)s
'''
)
self.add_argument(
'--quit-after-boot',
default=False,
help='''\
Setup a kernel init parameter that makes the emulator quit immediately after boot.
'''
)
self.add_argument(
'-R', '--replay', default=False,
help='Replay a QEMU run record deterministically'
)
self.add_argument(
'-r', '--record', default=False,
help='Record a QEMU run record for later replay with `-R`'
)
self.add_argument(
'-T', '--trace',
help='''\
Set trace events to be enabled. If not given, gem5 tracing is completely
disabled, while QEMU tracing is enabled but uses default traces that are very
rare and don't affect performance, because `./configure
--enable-trace-backends=simple` seems to enable some traces by default, e.g.
`pr_manager_run`, and I don't know how to get rid of them.
'''
)
self.add_argument(
'--trace-stdout',
default=False,
help='''\
Output trace to stdout instead of a file. Only works for gem5 currently.
'''
)
self.add_argument(
'--trace-insts-stdout',
default=False,
help='''\
Trace instructions run to stdout. Shortcut for --trace --trace-stdout.
'''
)
self.add_argument(
'--terminal', default=False,
help='''\
Output to the terminal, don't pipe to tee as the default.
Does not save the output to a file, but allows you to use debuggers.
Set automatically by --debug-vm, but you still need this option to debug
gem5 Python scripts with pdb.
'''
)
self.add_argument(
'-t', '--tmux', default=False,
help='''\
Create a tmux split the window. You must already be inside of a `tmux` session
to use this option:
* on the main window, run the emulator as usual
* on the split:
** if on QEMU and `-d` is given, GDB
** if on gem5, the gem5 terminal
See: https://github.com/cirosantilli/linux-kernel-module-cheat#tmux
'''
)
self.add_argument(
'--tmux-args',
help='''\
Parameters to pass to the program running on the tmux split. Implies --tmux.
'''
)
self.add_argument(
'-w', '--wait-gdb', default=False,
help='Wait for GDB to connect before starting execution'
)
self.add_argument(
'-x', '--graphic', default=False,
help='Run in graphic mode. Mnemonic: X11'
)
self.add_argument(
'-V', '--vnc', default=False,
help='''\
Run QEMU with VNC instead of the default SDL. Connect to it with:
`vinagre localhost:5900`.
'''
)
self.add_argument(
'extra_emulator_args', nargs='*', default=[],
help='Extra options to append at the end of the emulator command line'
)
def timed_main(self):
show_stdout = True
# Common qemu / gem5 logic.
# nokaslr:
# * https://unix.stackexchange.com/questions/397939/turning-off-kaslr-to-debug-linux-kernel-using-qemu-and-gdb
# * https://stackoverflow.com/questions/44612822/unable-to-debug-kernel-with-qemu-gdb/49840927#49840927
# Turned on by default since v4.12
kernel_cli = 'console_msg_format=syslog nokaslr norandmaps panic=-1 printk.devkmsg=on printk.time=y rw'
if self.env['kernel_cli'] is not None:
kernel_cli += ' {}'.format(self.env['kernel_cli'])
if self.env['quit_after_boot']:
kernel_cli += ' {}'.format(self.env['quit_init'])
kernel_cli_after_dash = ''
extra_emulator_args = []
extra_qemu_args = []
if self.env['tmux_args'] is not None:
self.env['tmux'] = True
if self.env['debug_vm'] or self.env['debug_vm_args']:
debug_vm = ['gdb', LF, '-q', LF] + self.sh.shlex_split(self.env['debug_vm_args']) + ['--args', LF]
else:
debug_vm = []
if self.env['wait_gdb']:
extra_qemu_args.extend(['-S', LF])
if self.env['eval_after'] is not None:
kernel_cli_after_dash += ' lkmc_eval_base64="{}"'.format(self.sh.base64_encode(self.env['eval_after']))
if self.env['kernel_cli_after_dash'] is not None:
kernel_cli_after_dash += ' {}'.format(self.env['kernel_cli_after_dash'])
if self.env['vnc']:
vnc = ['-vnc', ':0', LF]
else:
vnc = []
if self.env['eval'] is not None:
kernel_cli += ' {}=/eval_base64.sh'.format(self.env['initarg'])
kernel_cli_after_dash += ' lkmc_eval="{}"'.format(self.sh.base64_encode(self.env['eval']))
if not self.env['graphic']:
extra_qemu_args.extend(['-nographic', LF])
console = None
console_type = None
console_count = 0
if self.env['arch'] == 'x86_64':
console_type = 'ttyS'
elif self.env['is_arm']:
console_type = 'ttyAMA'
console = '{}{}'.format(console_type, console_count)
console_count += 1
if not (self.env['arch'] == 'x86_64' and self.env['graphic']):
kernel_cli += ' console={}'.format(console)
extra_console = '{}{}'.format(console_type, console_count)
console_count += 1
if self.env['kdb'] or self.env['kgdb']:
kernel_cli += ' kgdbwait'
if self.env['kdb']:
if self.env['graphic']:
kdb_cmd = 'kbd,'
else:
kdb_cmd = ''
kernel_cli += ' kgdboc={}{},115200'.format(kdb_cmd, console)
if self.env['kgdb']:
kernel_cli += ' kgdboc={},115200'.format(extra_console)
if kernel_cli_after_dash:
kernel_cli += " -{}".format(kernel_cli_after_dash)
extra_env = {}
if self.env['trace_insts_stdout']:
if self.env['emulator'] == 'qemu':
extra_emulator_args.extend(['-d', 'in_asm', LF])
elif self.env['emulator'] == 'gem5':
self.env['trace_stdout'] = True
self.env['trace'] = 'ExecAll'
if self.env['trace'] is None:
do_trace = False
# A dummy value that is already turned on by default and does not produce large output,
# just to prevent QEMU from emitting a warning that '' is not valid.
trace_type = 'load_file'
else:
do_trace = True
trace_type = self.env['trace']
def raise_rootfs_not_found():
if not self.env['dry_run']:
raise Exception('Root filesystem not found. Did you build it? ' \
'Tried to use: ' + self.env['disk_image'])
def raise_image_not_found():
if not self.env['dry_run']:
raise Exception('Executable image not found. Did you build it? ' \
'Tried to use: ' + self.env['image'])
if self.env['image'] is None:
raise Exception('Baremetal ELF file not found. Tried:\n' + '\n'.join(paths))
cmd = debug_vm.copy()
if self.env['emulator'] == 'gem5':
if self.env['quiet']:
show_stdout = False
if self.env['baremetal'] is None:
if not os.path.exists(self.env['rootfs_raw_file']):
if not os.path.exists(self.env['qcow2_file']):
raise_rootfs_not_found()
self.raw_to_qcow2(qemu_which=self.env['qemu_which'], reverse=True)
else:
if not os.path.exists(self.env['gem5_fake_iso']):
os.makedirs(os.path.dirname(self.env['gem5_fake_iso']), exist_ok=True)
self.sh.write_string_to_file(self.env['gem5_fake_iso'], 'a' * 512)
if not os.path.exists(self.env['image']):
# This is to run gem5 from a prebuilt download.
if (not self.env['baremetal'] is None) or (not os.path.exists(self.env['linux_image'])):
raise_image_not_found()
self.sh.run_cmd([os.path.join(self.env['extract_vmlinux'], self.env['linux_image'])])
os.makedirs(os.path.dirname(self.env['gem5_readfile']), exist_ok=True)
self.sh.write_string_to_file(self.env['gem5_readfile'], self.env['gem5_readfile'])
memory = '{}B'.format(self.env['memory'])
gem5_exe_args = self.sh.shlex_split(self.env['gem5_exe_args'])
if do_trace:
gem5_exe_args.extend(['--debug-flags={}'.format(trace_type), LF])
extra_env['M5_PATH'] = self.env['gem5_system_dir']
# https://stackoverflow.com/questions/52312070/how-to-modify-a-file-under-src-python-and-run-it-without-rebuilding-in-gem5/52312071#52312071
extra_env['M5_OVERRIDE_PY_SOURCE'] = 'true'
if self.env['trace_stdout']:
debug_file = 'cout'
else:
debug_file = 'trace.txt'
cmd.extend(
[
self.env['executable'], LF,
'--debug-file', debug_file, LF,
'--listener-mode', 'on', LF,
'--outdir', self.env['m5out_dir'], LF,
] +
gem5_exe_args
)
if self.env['userland'] is not None:
cmd.extend([
self.env['gem5_se_file'], LF,
'--cmd', self.resolve_userland(self.env['userland']), LF,
])
if self.env['userland_args'] is not None:
cmd.extend(['--options', self.env['userland_args'], LF])
else:
if self.env['gem5_script'] == 'fs':
# TODO port
if self.env['gem5_restore'] is not None:
cpt_dirs = self.gem5_list_checkpoint_dirs()
cpt_dir = cpt_dirs[-self.env['gem5_restore']]
extra_emulator_args.extend(['-r', str(sorted(cpt_dirs).index(cpt_dir) + 1)])
cmd.extend([
self.env['gem5_fs_file'], LF,
'--disk-image', self.env['disk_image'], LF,
'--kernel', self.env['image'], LF,
'--mem-size', memory, LF,
'--num-cpus', str(self.env['cpus']), LF,
'--script', self.env['gem5_readfile'], LF,
])
if self.env['arch'] == 'x86_64':
if self.env['kvm']:
cmd.extend(['--cpu-type', 'X86KvmCPU', LF])
cmd.extend(['--command-line', 'earlyprintk={} lpj=7999923 root=/dev/sda {}'.format(console, kernel_cli), LF])
elif self.env['is_arm']:
if self.env['kvm']:
cmd.extend(['--cpu-type', 'ArmV8KvmCPU', LF])
if self.env['dp650']:
dp650_cmd = 'dpu_'
else:
dp650_cmd = ''
cmd.extend([
# TODO why is it mandatory to pass mem= here? Not true for QEMU.
# Anything smaller than physical blows up as expected, but why can't it auto-detect the right value?
'--command-line', 'earlyprintk=pl011,0x1c090000 lpj=19988480 rw loglevel=8 mem={} root=/dev/sda {}'.format(memory, kernel_cli), LF,
'--machine-type', self.env['machine'], LF,
])
dtb = None
if self.env['dtb'] is not None:
dtb = self.env['dtb']
elif self.env['dp650']:
dtb = os.path.join(self.env['gem5_system_dir'], 'arm', 'dt', 'armv{}_gem5_v1_{}{}cpu.dtb'.format(self.env['armv'], dp650_cmd, self.env['cpus']))
if dtb is not None:
cmd.extend(['--dtb-filename', dtb, LF])
if self.env['baremetal'] is None:
cmd.extend(['--param', 'system.panic_on_panic = True', LF ])
else:
cmd.extend([
'--bare-metal', LF,
'--param', 'system.auto_reset_addr = True', LF,
])
if self.env['arch'] == 'aarch64':
# https://stackoverflow.com/questions/43682311/uart-communication-in-gem5-with-arm-bare-metal/50983650#50983650
cmd.extend(['--param', 'system.highest_el_is_64 = True', LF])
elif self.env['gem5_script'] == 'biglittle':
if self.env['kvm']:
cpu_type = 'kvm'
else:
cpu_type = 'atomic'
if self.env['gem5_restore'] is not None:
cpt_dir = self.gem5_list_checkpoint_dirs()[-self.env['gem5_restore']]
extra_emulator_args.extend(['--restore-from', os.path.join(self.env['m5out_dir'], cpt_dir)])
cmd.extend([
os.path.join(self.env['gem5_source_dir'], 'configs', 'example', 'arm', 'fs_bigLITTLE.py'), LF,
'--big-cpus', '2', LF,
'--cpu-type', cpu_type, LF,
'--disk', self.env['disk_image'], LF,
'--kernel', self.env['image'], LF,
'--little-cpus', '2', LF,
])
if self.env['dtb']:
cmd.extend(['--dtb', os.path.join(self.env['gem5_system_dir'], 'arm', 'dt', 'armv8_gem5_v1_big_little_2_2.dtb'), NL])
if self.env['wait_gdb']:
# https://stackoverflow.com/questions/49296092/how-to-make-gem5-wait-for-gdb-to-connect-to-reliably-break-at-start-kernel-of-th
cmd.extend(['--param', 'system.cpu[0].wait_for_remote_gdb = True', LF])
elif self.env['emulator'] == 'qemu':
qemu_user_and_system_options = [
'-trace', 'enable={},file={}'.format(trace_type, self.env['qemu_trace_file']), LF,
]
if self.env['userland'] is not None:
if self.env['wait_gdb']:
debug_args = ['-g', str(self.env['gdb_port']), LF]
else:
debug_args = []
cmd.extend(
[
os.path.join(self.env['qemu_build_dir'], '{}-linux-user'.format(self.env['arch']), 'qemu-{}'.format(self.env['arch'])), LF,
'-L', self.env['userland_library_dir'], LF
] +
qemu_user_and_system_options +
debug_args
)
else:
if not os.path.exists(self.env['image']):
raise_image_not_found()
extra_emulator_args.extend(extra_qemu_args)
self.make_run_dirs()
if self.env['qemu_which'] == 'host' or not os.path.exists(self.env['qemu_executable']):
qemu_executable = self.env['qemu_executable_basename']
qemu_executable_host = True
else:
qemu_executable = self.env['qemu_executable']
qemu_executable_host = False
qemu_executable = shutil.which(qemu_executable)
if qemu_executable is None:
raise Exception('QEMU executable not found, did you forget to build or install it?\n' \
'Tried to use: ' + qemu_executable)
if self.env['debug_vm']:
serial_monitor = []
else:
if self.env['background']:
serial_monitor = ['-serial', 'file:{}'.format(self.env['qemu_background_serial_file']), LF]
if self.env['quiet']:
show_stdout = False
else:
if self.env['ctrl_c_host']:
serial = 'stdio'
else:
serial = 'mon:stdio'
serial_monitor = ['-serial', serial, LF]
if self.env['kvm']:
extra_emulator_args.extend(['-enable-kvm', LF])
extra_emulator_args.extend(['-serial', 'tcp::{},server,nowait'.format(self.env['extra_serial_port']), LF])
virtfs_data = [
(self.env['p9_dir'], 'host_data'),
(self.env['out_dir'], 'host_out'),
(self.env['out_rootfs_overlay_dir'], 'host_out_rootfs_overlay'),
(self.env['rootfs_overlay_dir'], 'host_rootfs_overlay'),
]
virtfs_cmd = []
for virtfs_dir, virtfs_tag in virtfs_data:
if os.path.exists(virtfs_dir):
virtfs_cmd.extend([
'-virtfs',
'local,path={virtfs_dir},mount_tag={virtfs_tag},security_model=mapped,id={virtfs_tag}' \
.format(virtfs_dir=virtfs_dir, virtfs_tag=virtfs_tag),
LF,
])
if self.env['machine2'] is not None:
# Multiple -machine options can also be given comma separated in one -machine.
# We use multiple because the machine is used as an identifier on baremetal tests
# build paths, so better keep them clean.
machine2 = ['-machine', self.env['machine2'], LF]
else:
machine2 = []
cmd.extend(
[
qemu_executable, LF,
'-machine', self.env['machine'], LF,
] +
machine2 +
[
'-device', 'rtl8139,netdev=net0', LF,
'-gdb', 'tcp::{}'.format(self.env['gdb_port']), LF,
'-kernel', self.env['image'], LF,
'-m', self.env['memory'], LF,
'-monitor', 'telnet::{},server,nowait'.format(self.env['qemu_monitor_port']), LF,
'-netdev', 'user,hostfwd=tcp::{}-:{},hostfwd=tcp::{}-:22,id=net0'.format(self.env['qemu_hostfwd_generic_port'], self.env['qemu_hostfwd_generic_port'], self.env['qemu_hostfwd_ssh_port']), LF,
'-no-reboot', LF,
'-smp', str(self.env['cpus']), LF,
] +
virtfs_cmd +
serial_monitor +
vnc
)
if self.env['dtb'] is not None:
cmd.extend(['-dtb', self.env['dtb'], LF])
if not qemu_executable_host:
cmd.extend(qemu_user_and_system_options)
if self.env['initrd']:
extra_emulator_args.extend(['-initrd', self.env['buildroot_cpio'], LF])
rr = self.env['record'] or self.env['replay']
if self.env['ramfs']:
# TODO why is this needed, and why any string works.
root = 'root=/dev/anything'
else:
if rr:
driveif = 'none'
rrid = ',id=img-direct'
root = 'root=/dev/sda'
snapshot = ''
else:
driveif = 'virtio'
root = 'root=/dev/vda'
rrid = ''
snapshot = ',snapshot'
if self.env['baremetal'] is None:
if not os.path.exists(self.env['qcow2_file']):
if not os.path.exists(self.env['rootfs_raw_file']):
raise_rootfs_not_found()
self.raw_to_qcow2(qemu_which=self.env['qemu_which'])
extra_emulator_args.extend([
'-drive',
'file={},format=qcow2,if={}{}{}'.format(self.env['disk_image'], driveif, snapshot, rrid),
LF,
])
if rr:
extra_emulator_args.extend([
'-drive', 'driver=blkreplay,if=none,image=img-direct,id=img-blkreplay', LF,
'-device', 'ide-hd,drive=img-blkreplay', LF,
])
if rr:
extra_emulator_args.extend([
'-object', 'filter-replay,id=replay,netdev=net0',
'-icount', 'shift=7,rr={},rrfile={}'.format('record' if self.env['record'] else 'replay', self.env['qemu_rrfile']),
])
virtio_gpu_pci = []
else:
virtio_gpu_pci = ['-device', 'virtio-gpu-pci', LF]
if self.env['arch'] == 'x86_64':
append = ['-append', '{} nopat {}'.format(root, kernel_cli), LF]
cmd.extend([
'-device', 'edu', LF,
])
elif self.env['is_arm']:
extra_emulator_args.extend(['-semihosting', LF])
if self.env['arch'] == 'arm':
cpu = 'cortex-a15'
else:
cpu = 'cortex-a57'
append = ['-append', '{} {}'.format(root, kernel_cli), LF]
cmd.extend(
[
'-cpu', cpu, LF,
] +
virtio_gpu_pci
)
if self.env['baremetal'] is None:
cmd.extend(append)
if self.env['tmux']:
tmux_args = '--run-id {}'.format(self.env['run_id'])
if self.env['emulator'] == 'gem5':
tmux_cmd = './gem5-shell'
else:
tmux_cmd = './run-gdb'
# TODO find a nicer way to forward all those args automatically.
# Part of me wants to: https://github.com/jonathanslenders/pymux
# but it cannot be used as a library properly it seems, and it is
# slower than tmux.
tmux_args += " --arch {} --linux-build-id '{}' --run-id '{}'".format(
self.env['arch'],
self.env['linux_build_id'],
self.env['run_id'],
)
if self.env['baremetal']:
tmux_args += " --baremetal '{}'".format(self.env['baremetal'])
if self.env['userland']:
tmux_args += " --userland '{}'".format(self.env['userland'])
if self.env['tmux_args'] is not None:
tmux_args += ' {}'.format(self.env['tmux_args'])
subprocess.Popen([
os.path.join(self.env['root_dir'], 'tmu'),
"sleep 2;{} {}".format(tmux_cmd, tmux_args)
])
cmd.extend(extra_emulator_args)
cmd.extend(self.env['extra_emulator_args'])
if self.env['emulator'] == 'qemu' and self.env['userland']:
# The program and arguments must come at the every end of the CLI.
cmd.extend([self.resolve_userland(self.env['userland']), LF])
if self.env['userland_args'] is not None:
cmd.extend(self.sh.shlex_split(self.env['userland_args']))
if debug_vm or self.env['terminal']:
out_file = None
else:
out_file = self.env['termout_file']
exit_status = self.sh.run_cmd(
cmd,
cmd_file=self.env['run_cmd_file'],
extra_env=extra_env,
out_file=out_file,
raise_on_failure=False,
show_stdout=show_stdout,
)
if exit_status == 0:
# Check if guest panicked.
if self.env['emulator'] == 'gem5':
# We have to do some parsing here because gem5 exits with status 0 even when panic happens.
# Grepping for '^panic: ' does not work because some errors don't show that message.
panic_msg = b'--- BEGIN LIBC BACKTRACE ---$'
else:
panic_msg = b'Kernel panic - not syncing'
panic_re = re.compile(panic_msg)
error_string_found = False
exit_status = 0
if out_file is not None and not self.env['dry_run']:
with open(self.env['termout_file'], 'br') as logfile:
line = None
for line in logfile:
if panic_re.search(line):
exit_status = 1
if line is not None:
last_line = line.rstrip()
match = re.search(b'Simulated exit code not 0! Exit code is (\d+)', last_line)
if match:
exit_status = int(match.group(1))
if not self.env['userland']:
if os.path.exists(self.env['guest_terminal_file']):
with open(self.env['guest_terminal_file'], 'br') as logfile:
for line in logfile.readlines():
if line.rstrip() == self.env['magic_fail_string']:
exit_status = 1
break
if exit_status != 0:
self.log_error('simulation error detected by parsing logs')
return exit_status
if __name__ == '__main__':
Main().cli()
You can’t perform that action at this time.